Table 3 Crude and adjusted odds ratios with (95%CI) for selected perinatal health outcomes of East African immigrants and Australian-born women giving birth to singletons in Victoria, Australia between 1999 and 2007

Low birthweight (n and %)

22,502 (5.3)

30 (6.6)

57 (5.2)

84 (4.5)

94 (6.7)

265 (5.5)

 OR (95 % CI)

1.00

1.28 (0.88, 1.85)

0.99(0.76, 1.29)

0.85 (0.68, 1.06)

1.29 (1.05, 1.59)

1.05 (0.93, 1.19)

 OR_adj (95 % CI)

1.00

1.39 (0.95, 2.02)

0.90 (0.68, 1.17)

0.89 (0.71, 1.11)

1.36 (1.10, 1.68)

1.07 (0.94, 1.21)

Very low birthweight (n and %)

9,149 (2.2)

16 (3.5)

36 (3.3)

39 (2.1)

44 (3.1)

135 (2.8)

 OR (95 % CI)

1.00

1.68 (1.02, 2.76)

1.56 (1.12, 2.17)

0.98 (0.71, 1.35)

1.48 (1.08, 2.00)

1.32 (1.11, 1.57)

 OR_adj (95 % CI)

1.00

1.80 (1.09, 2.98)

1.39 (0.99, 1.96)

1.01 (0.73, 1.40)

1.53 (1.13, 2.07)

1.33 (1.11, 1.58)

Preterm birth (n and %)

26,900 (6.3)

28 (6.2)

70 (6.4)

82 (4.4)

83 (5.9)

263 (5.5)

 OR (95 % CI)

1.00

0.98 (0.67,1.44)

1.02 (0.80, 1.30)

0.69 (0.55, 0.86)

0.94 (0.75,1.17)

0.86 (0.76, 0.98)

 OR_adj (95 % CI)

1.00

1.02 (0.70, 1.50)

0.95 (0.74, 1.21)

0.70 (0.56, 0.88)

0.96 (0 .76, 1.19)

0.86 (0.76, 0.98)

Very preterm birth (n and %)

5,680 (1.4)

11 (2.4)

28 (2.6)

28 (1.5)

33 (2.4)

100 (2.1)

 OR (95 % CI)

1.00

1.85 (1.02, 3.37)

1.95 (1.34, 2.84)

1.14 (0.78, 1.65)

1.79 (1.27, 2.53)

1.58 (1.29, 1.93)

 OR_adj (95 % CI)

1.00

1.96 (1.08, 3.58)

1.70 (1.16, 2.50)

1.18 (0.81, 1.71)

1.78 (1.26, 2.53)

1.55 (1.27, 1.90)

Apgar score <7 (n and %)

3,776 (0.94)

6 (1.4)

7(0.68)

16 (0.90)

18 (1.4)

47 (1.0)

 OR (95 % CI)

1.00

1.50 (0.67, 3.37)

0.72 (0.34, 1.52)

0.96 (0.59, 1.57)

1.47 (0.92, 2.34)

1.10 (0.83, 1.47)

 OR_adj (95 % CI)

1.00

1.62 (0.72, 3.64)

0.72 (0.35, 1.53)

1.08 (0.66, 1.78)

1.56 (0.97, 2.49)

1.18 (0.89, 1.59)

Macrosomia (n and %)

8,564 (2)

6 (1.3)

15 (1.4)

37 (2)

10 (0.7)

68 (1.4)

 OR (95 % CI)

1.00

0.66 (0.29, 1.47)

0 .68 (0.41, 1.13)

0.99 (0.72, 1.38)

0.35 (0.19, 0.65)

0.70 (0.55, 0.89)

 OR_adj (95 % CI)

1.00

0 .65 (0.29, 1.45)

0.67 (0.40, 1.11)

0.90 (0.65, 1.25)

0.32 (0.17, 0.59)

0.65 (0.51, 0.83)

SGA (n and %)

37,820 (8.8)

54 (11.9)

104 (9.5)

222 (11.9)

219 (15.5)

599 (12.4)

 OR (95 % CI)

1.00

1.40 (1.05, 1.85)

1.08 (0.88, 1.33)

1.40 (1.21, 1.61)

1.91 (1.65, 2.20)

1.47 (1.34, 1.60)

 OR_adj (95 % CI)

1.00

1.52 (1.14, 2.03)

1.07 (0 .87, 1.31)

1.58 (1.37, 1.83)

2.13 (1.84, 2.47)

1.59 (1.46, 1.74)

Perinatal mortality (n/1000)

4,205 (9.8)

11 (24)

16 (14.6)

31 (17)

28 (20)

86 (18)

 OR (95 % CI)

1.00

2.51 (1.38, 4.56)

1.49 (0.91, 2.45)

1.71 (1.19, 2.44)

2.05 (1.41, 2.98)

1.83 (1.48, 2.27)

 OR_adj (95 % CI)

1.00

2.69 (1.47, 4.91)

1.29 (0.77, 2.15)

1.78 (1.25, 2.55)

2.10(1.44, 3.07)

1.83 (1.47, 2.28)